Grinding package fitted on robotic arm

Abstract

A grinding package fitted on robotic arm includes a main body, a pneumatic motor, a bridging part and a grinding tool. The main body is formed with a first space, a second space, a communicating hole communicating the first space to the second space, a connecting wall within the first space, an intake channel, an exhaust channel, openings of the first space and the second space respectively located on each of two parallel sides of the main body, the connecting wall having a ventilation hole. The pneumatic motor includes a motor body within the first space, and a transmission shaft connected to the motor body while extended from the second space through the communicating hole. The bridging part is combined with the main body and the robotic arm, the bridging part closing off the first space, the grinding tool facing the second space and being joined to the transmission shaft.

What is claimed is: 
     
       1. A grinding package fitted on a robotic arm, comprising:
 a main body forming a first space, a second space, a communicating hole communicating the first space to the second space, a connecting wall being provided within the first space and separating the first space into an intake region and a working region, an intake channel communicated to the intake region, an exhaust channel communicated to the working region, openings of the first space and the second space being respectively located on each of two parallel sides of the main body, the main body provided with a bearing mounting groove which is located within the second space and corresponding to the communicating hole, and the connecting wall being provided with a ventilation hole communicating the intake region to the working region; 
 a pneumatic motor including a motor body provided within the working region, and a transmission shaft connected to the motor body while extended from the second space through the communicating hole; 
 a first bearing located in the bearing mounting groove and provided for the transmission shaft to pass through; 
 a bridging part combined with the main body and the robotic arm, the bridging part closing off the first space, in such a way that a working gas from the intake channel being only discharged from the exhaust channel through the intake region and the working region; and 
 a grinding tool facing the second space and being joined to the transmission shaft, the grinding tool being turned by the transmission shaft, which is turned by impelling the motor body by the working gas, 
 wherein the pneumatic motor is further provided with a cover plate, the cover plate comprising a plate body constrained by the main body and the bridging part cooperatively, a through-hole being provided with the plate body and allowing the transmission shaft passing therethrough, and a first annular wall located on the plate body and centered at the through-hole, the grinding package being provided with a second bearing located within a space encircled by the first annular wall and joined to the transmission shaft. 
 
     
     
       2. The grinding package fitted on robotic arm according to  claim 1 , wherein the bridging part is provided with a second annular wall protruding in a direction toward the first space and fastening the first annular wall. 
     
     
       3. The grinding package fitted on robotic arm according to  claim 1 , wherein the pneumatic motor is provided with an eccentric block combined with the transmission shaft and located within the second space, the eccentric block being joined to the grinding tool while a shaft center of the grinding tool deviating from the transmission shaft. 
     
     
       4. The grinding package fitted on robotic arm according to  claim 1 , wherein the main body is provided with at least one third threaded hole, while the bridging part is provided with a fourth threaded hole facing the third threaded hole after the bridging part and the main body are joined to each other. 
     
     
       5. The grinding package fitted on robotic arm according to  claim 4 , wherein the bridging part is provided with a plurality of fifth threaded holes used for connecting the robotic arm, respectively.